*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container{
    width: 400px;
    /* border: 1px solid #ccc; */
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}
.container .box{
    border: 1px solid #ccc;
    border-radius: 3px;
    box-shadow: 2px 2px 5px rgba(0,0,0,.4);
    width: 350px;
    display: flex;
    flex-direction: column;
        justify-content: center;
       
        margin: 20px 0;
        padding: 10px;
        background-color: #ccc;
}
.container .box .top{
    display: flex;
}
.container .box .top .title{
    flex: 1;
    /* border: 1px solid #000; */
    font-size: 26px;
    color: darkcyan;
    
}
.container .box .top button{
    width: 40px;
    
}
.container .box .content{
    font-size: 20px;
    margin-top:10px;
    display: none;
}
